How to Read a Cannabis Lab Test: Understanding COAs

What is a Certificate of Analysis (COA)?

A COA is a third-party lab report that provides details about a cannabis product’s potency, purity, and safety. Most legal dispensaries provide COAs to confirm product quality.

Key Components of a COA

Section	What It Tells You
Cannabinoid Profile	THC, CBD, and other cannabinoid content
Terpene Profile	Aroma and effect-enhancing compounds
Pesticide Screening	Ensures product is free from harmful chemicals
Residual Solvents	Checks for leftover extraction chemicals
Microbial Testing	Screens for mold, bacteria, and fungi

How to Read Potency Results

• THC % – Indicates psychoactive strength.
• CBD % – Higher amounts suggest therapeutic effects.
• Total Cannabinoids – Sum of all active compounds.

Why COAs Matter

• Ensures product safety (no pesticides, mold, or solvents).
• Verifies accurate potency labeling.
• Helps users choose products based on cannabinoid and terpene content.

Key Takeaways

• Always check for a COA when buying cannabis to verify quality.
• Lab tests reveal THC levels, terpene content, and contaminants.
• Understanding COAs helps consumers choose safer, more effective products.

If a dispensary cannot provide a COA, consider choosing another retailer.